Add example about jobs.list_jobs, jobs.lookup_jid

Sometimes the salt CLI will exit without displaying the return data from
all minions, but they do actually return data. This commit explains how
to use the jobs runners to obtain job return data and potentially catch
minions that did not return in these edge cases.
Merge pull request #9951 from terminalmage/docs

Add example about jobs.list_jobs, jobs.lookup_jid